Marketplace Sales:

$29.95, Jan 28th

$40, April 20th

Couldn’t find either history.

http://manic.tf/keyprice?at=2020-01-28&price=29.95 - $29.95 / $1.78 = 16.83 keys

https://bot.tf/stats/listings/4JGNWK8P - No B/O

http://manic.tf/keyprice?at=2020-04-20&price=40 - $40 / $1.79 = 22.35 keys

https://bot.tf/stats/listings/Y9Q368ZX - No B/O

After rounding, we have:

17 keys

22 keys

Other Sales:

https://backpack.tf/item/8549463676 (#1)

https://backpack.tf/item/7957658563 - marketplace

https://backpack.tf/item/3810644194 - mannco bot

https://backpack.tf/item/3336331636 - scammer alts

#1

Untraceable

https://backpack.tf/profiles/76561198277066609#!/compare/1585094400/1585353600

https://backpack.tf/profiles/76561198168863803#!/compare/1585008000/1585094400

Sellers:

https://i.imgur.com/kQdDN2t.png

https://backpack.tf/item/8549463676 - 20 keys

https://backpack.tf/item/3336331636 - 27 keys

https://backpack.tf/item/7956549210 - 27 keys

Sales at:

17

22

22 is too high given the month unsold at 20. Excluding 22.

Taking 17 flat.